Jeff Roberson 280e091a99 Implement fully asynchronous partial truncation with softupdates journaling ... to resolve errors which can cause corruption on recovery with the old synchronous mechanism. - Append partial truncation freework structures to indirdeps while truncation is proceeding. These prevent new block pointers from becoming valid until truncation completes and serialize truncations. - On completion of a partial truncate journal work waits for zeroed pointers to hit indirects. - softdep_journal_freeblocks() handles last frag allocation and last block zeroing. - vtruncbuf/ffs_page_remove moved into softdep_*_freeblocks() so it is only implemented in one place. - Block allocation failure handling moved up one level so it does not proceed with buf locks held. This permits us to do more extensive reclaims when filesystem space is exhausted. - softdep_sync_metadata() is broken into two parts, the first executes once at the start of ffs_syncvnode() and flushes truncations and inode dependencies. The second is called on each locked buf. This eliminates excessive looping and rollbacks. - Improve the mechanism in process_worklist_item() that handles acquiring vnode locks for handle_workitem_remove() so that it works more generally and does not loop excessively over the same worklist items on each call. - Don't corrupt directories by zeroing the tail in fsck. This is only done for regular files. - Push a fsync complete record for files that need it so the checker knows a truncation in the journal is no longer valid. Discussed with: mckusick, kib (ffs_pages_remove and ffs_truncate parts) Tested by: pho		2011-06-10 22:48:35 +00:00
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dir.c
ea.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
fsck_ffs.8	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
fsck.h	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
fsutil.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
gjournal.c	- Merge soft-updates journaling from projects/suj/head into head. This	2010-04-24 07:05:35 +00:00
inode.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
main.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
Makefile	- Merge soft-updates journaling from projects/suj/head into head. This	2010-04-24 07:05:35 +00:00
pass1.c
pass1b.c
pass2.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
pass3.c
pass4.c	Add support to background fsck to delete zero-length directories.	2010-05-20 06:05:40 +00:00
pass5.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
setup.c	In checker, read journal by sectors.	2011-02-12 13:17:14 +00:00
suj.c	Implement fully asynchronous partial truncation with softupdates journaling	2011-06-10 22:48:35 +00:00
utilities.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00